A 1991 Toyota Camry equipped with an electrically-heated catalyst/light-off converter system was evaluated for emissions in duplicate over the light-duty Federal Test Procedure (FTP) with three different fuels. Evaluations were conducted with the electrically heated catalyst (EHC) in place, both without any external heating and with the EHC operated using a post-crank heating strategy The EHC system was placed immediately upstream of an original production catalyst which was located 40.6 cm from the exhaust manifold. The three test fuels were: 1) a fuel meeting California's Phase II gasoline specifications; 2) a low-sulfur (48 ppm) version of the Auto/Oil industry average gasoline; and 3) the Auto/Oil industry average gasoline, RF-A. On average, NMOG emissions and the ozone forming potential of the exhaust hydrocarbons exhibited the following trend for tests run in unheated and EHC-active modes: Phase II < low-sulfur RF-A < RF-A. EHC operation on this test vehicle resulted in approximately a 50-percent reduction in average NMOG emissions, relative to unheated operation, independent of fuel composition. NMOG mass emission rates when operating on either version of the industry average gasoline were near the 50,000-mile LEV standard, but exhibited a strong dependence on the temperature achieved by the EHC during the post-heat period. Mass emission rates of toxics including formaldehyde, acetaldehyde, 1,3-butadiene, and benzene are summarized both with and without the EHC active.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fuel Effects on Emissions from an Advanced Technology Vehicle, Part II


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1994



    Publication date :

    1994-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Fuel effects on emissions from an advanced technology vehicle, part II

    Kubsh,J.E. / Weber,P.A. / Grace,US et al. | Automotive engineering | 1994


    Fuel Effects on Emissions from an Advanced Technology Vehicle, Part II

    Kubsh, J. E. / Weber, P. A. / Society of Automotive Engineers | British Library Conference Proceedings | 1994


    Fuel Effects on Emissions from an Advanced Technology Vehicle

    Kubsh, Joseph E. / Smith, Lawrence R. / Weber, Phillip A. | SAE Technical Papers | 1992


    Effects of Advanced Gasoline Vehicle Technologies and Fuel Properties on Emissions and Fuel Economy

    Kaneko, T. / Koseki, K. / Tanaka, E. et al. | British Library Conference Proceedings | 2005


    Relative Effects of Vehicle Technology and Fuel Formulation on Gasoline Vehicle Exhaust Emissions

    Goodfellow, C. L. / Beckwith, P. / Bennett, P. J. et al. | SAE Technical Papers | 1996